Welcome to the N.H.K - In Japan, 'NHK' refers to the TV channel and broadcasting corporation Nippon Hoso Kyokai, but within the series, the main character believes it stands for Nihon Hikikomori Kyokai which means 'The Japanese Hikikomori Association', a reference to the protagonist's claim of a subversive conspiracy led by NHK (the broadcasting corporation) to create NHK (the hikikomori group). While it mainly deals with the reclusive phenomenon of hikikomori, the plot also explores many other Japanese subcultures — for example: otaku, lolicon, and internet suicide. Despite the shows name, 'Welcome to the N.H.K.' is not broadcast exclusively on the NHK Network, but it is syndicated throughout Japan. - answers.com